Vibrator for molds



Sept. 1930. J. MILLER vxnuon FOR MoLDs Filed MaY 1'7, 1929 A TTORNEY.

Patented'semi-2.31930 f .Tosnmnl MILLER, or

. Application nieul isf-rayv i7,

. This invention lrelates tov improvements lin `vibratory apparatus applicable tomolds used'Vv inmaking vstructures `of 'concrete, such as.

tubing. v v .Y f The `object of lthe improvement is to providel a portable -and easily applicable appliance to the form in which concrete is molded, i "whereby the form is vibrated during the in-HV troduction of concrete'in the mold to facili-I io tate settlement of the concrete so as to insure p compactness thereof.. Another object ofthe .invention is to lprovide an appliance for supporting an air hammer, or otherjvibrating `instrument,-in connection vwith' ak concrete4 form or mold by means of which the vibravtory action of the instrumentsis augmented. and therebyV facilitatesettlement of concrete as -it is poured in the mold. f

Y These objects are accomplished vby the construction illustrated in the` accompanying .rdrawings,`in which :e f f ,n

-Fig.` g1 visa perspective View of. an' appliance embodyingfthe invention; and

Fig. 2 is a diagramof the applianceposi- 25tioned ona .form 'for making concrete tub-. ing,`therform being 'insectiongf 1 Y Y f The invention "consists of a 'frame'com-. l` posed of aV pair of brackets 1 spaced apart,

each having a hook 2 at-its top and a horizon- .talA extension 3 at its bottom. The brackets are connected at a point spaced from their l hooks by a cross-bar 4, and uponv the horizonl tal projections is, fixed a platform 45. A' tongue consisting of a bar of spring metal 4 at a point midway between the brackets and extends downwardly therefrom, vthe lower` end of said tonguey being free'. f

Upon the platform is rigidly secured avibrator 7 preferably an airvdrivenhammer, in any ksuitable mannerpthere beingy shownfa strap 8 extending over the barrel ofthe hammer with its ends bolted-to the platform whereby the Vhammer is `heldin place thereon 45 .withitspeen 9 disposed so jas to strike the?` Y front face of the tongue r when the hammer f isinaction..A v The upper ends ofthe brackets have se- -cured'thereon a handle 10 fo'ruse in lifting 5o the appliance, and the vplatform has a weight is secured at its upper end tothe Vcross-bar 'l its outer 'endf" f f ietf .the @mcrae formrbirhookinath upper .'55

endsf-ofthe brackets over the uppere'dger l :Whilethe appliance is'thusj positioned, conjl crete 13 -is poured 'into' themold between 6.0 `the'forms 12and j14, and the hammer is acti'- n v'vated in thejusu'al manner. yAs the peen,y ystrikeslthe, t'oi1,gi,ue,"the wall12 receives the impact througl'i thel'tongueandY is therebyl jarr'ed which'causes the-.concrete-mass-in1the v 'moldfto befshaken. v .Also,`f.upongeach`blow, 1 y

ofthepeemthefree end-of the tongueirel i gbounds'outwardlynfromf-the.'adjacent wfallffy f dueto thefimpa-ctiand slaps against the`- wall',`v v thus supplementingfthe' shockad'ministeredv 'my ytoithelmoldbythe/hammer?.v "i l' VThe weight attachedto th plratform'tends toi? eauseithe"frameandthe ltongue-to loearfV l* iirmlyagai'nsttheiwal-llof the mold and addsy tofthestability of the Iapparatusnwhen in r715 v placeand inaction by-absorbingthe'recoil vof ,the hammer. f

. The vinvention 1s form, and thus, increasing concrete'product.` Y

`What I vclaim is zv- 1. A vibrator consisting of aframe having l spaced brackets providedfwith hooks at their 85- I upper ends anda'platform supported at their 1 lowerends for attachment to a form; a cross- .barv connecting said brackets spacedk fromV i theirupper ends; a spring tongue consisting of a bar securedat one end thereof to saidoo cross-bar atl a Ypoint between said brackets, vthe lower'end 'offsa'id tongue being free; an

*air hammer or similar instrument fixed upon said platformjand'acting against said tongue at va point thereon betweenv its ends;v anda 95 y weight suspended from said framewherebyf* Ifsaid tongue is held-firmly against the wall Q f .lof said form When. the appliance is attached c. thereto.v v f. Y

- f 2. Agvibrator Aconsisting frame vat-YV'IIQQ r In vnu 112mg [the ihvnruemfthei fraile" is*l useful injcausing-.the'con- 1' f I crete' asfitis'poured in themold to become Y j j l compact therein by constantly jarring` thregsrogk j" thetenacityof the tachable to one end'of a form; a spring tongue fixed at one end to said'frame that lies against the exterior of said form when the frame is in place; a vibrating hammer in connection With 5 the frame and acting against said tongue at a. point between the ends' thereof; and a 4Weight)promoting stabilityk ofI the framein placeon theform. f Y t N 3. A vibrator .consisting Vof -a frame at- Y 'A m tachableat one. end thereof to a( form; a spring tongue fixed at onek Vend to said frame, Which tongue lies against the exterior of said c form When'theframeis in place-@and a Vi- 4 brating hammer y"in vconnectionm'With the Y. t l5 frame, acting against said tongue at a point between theendsthereof; Y

vibrator consistingof ra frame at- Y tachable at 'one end thereof toa lform; a K spring tongue vfixed at one end to said frame, 2() which tongue lies approximately flat against gsaidform'when the :trame is in place; a vibrating hammer; in connectionf with ther frame', acting against said tongue, whereby f n c said formo: receives impacts `of the hammer l 25 through saidtongue and reactionaryT 'impacts of said tongue and a Weightpromoting stability to theframe when invplaceon the form.

i 5f A ,vibraton'consistingof a frame aty v-tach'able at -one end otra vforni;a, spring 31, tongue fixed atone endto said frame, which y tongue lies approximatelyat against said form-When the frame isin piace; anda yi- 'brating g hammer in',` connection with the t frame, actingzagainst said'tongue, whereby 35"Said formireceives impacts kkof vthehammer f through said tongue and reactionary impacts f of-said tongue: v f In testimony'whereofl'alix my signature Y JOSEPHLE. MILLER 4014.' V f. f. 

